Mental health conditions include disorders that impact mood, thinking, and behavior. Each has unique symptoms, but mental health conditions can cause low mood, confusion, hallucinations, extreme mood ...

May 13, 2026 Researchers have uncovered unexpectedly high levels of silicone-based pollutants called methylsiloxanes floating through the atmosphere across cities, rural regions, and even forests.

Susan Bard, MD, is a board-certified general and procedural dermatologist with the American Board of Dermatology and a Fellow of the American College of Mohs Surgery. Some of the most common skin ...

Heart disease refers to any problem affecting the heart, such as coronary artery disease, arrhythmia, and heart failure. Symptoms and treatments depend on the type of heart disease someone has. Heart ...

In the United States, a rare disease is one that affects fewer than 200,000 people. Around 10,000 diseases fit this definition. However, there’s no single definition that applies everywhere in the ...